title: ECF impairment is common.
mesh_terms: D000367:Age Factors; D000368:Aged; D003072:Cognition Disorders / Q000150:complications* / Q000523:psychology; D006801:Humans; D009330:Nebulizers and Vaporizers; D010349:Patient Compliance; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy* / Q000523:psychology; D012646:Self Administration